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CVE-2001-0546

• Severity: medium (CVSS 5.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 17.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2001-09-20 · updated 2026-06-16

Description

Memory leak in H.323 Gatekeeper Service in Microsoft Internet Security and Acceleration (ISA) Server 2000 allows remote attackers to cause a denial of service (resource exhaustion) via a large amount of malformed H.323 data.

Affected products

• Microsoft Isa Server: 2000

References

• http://www.securityfocus.com/bid/3196
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2001/ms01-045
• https://exchange.xforce.ibmcloud.com/vulnerabilities/6989
• http://www.securityfocus.com/bid/3196
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2001/ms01-045
• https://exchange.xforce.ibmcloud.com/vulnerabilities/6989

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